While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source E cigarette, or Vaping Product, Use Associated Lung Injury (EVALI) Fact Sheets Yale Medicine Is 2nd Hand Vape Smoke Bad Is Second Hand Vaping Harmful What Is Secondhand Smoke? Chemicals Is Secondhand Vaping Harmful To Your Health? What Does Vaping Do to Your Lungs? Johns Hopkins Medicine